Geodetic monitoring of transient deformationalong the Pacific-North American plate boundary

This page integrates daily GPS measurements from ~1500 stations along the Pacific/North American plate boundary, ranging
from Alaska to the U.S-Mexico border (click on figure to right). Cleaned, network solutions from several arrays
are merged below and grouped into regional clusters. Arrays include the Pacific Northwest Geodetic Array,
EarthScope'sPlate Boundary Observatory, the
Western Canadian Deformation Array, and networks run by the
US Geological Survey.
Map images below link to station locations. Data image thumbnails update daily, and link to positions
updated daily. Time series from the Plate Boundary Observatory network are merged GAMIT and GIPSY solutions from UNAVCO, Inc., while PANGA stations from Washington, Oregon and northernmost California are GIPSY-only solutions computed by the CWU Geodesy Lab with support from the
USGS,
NASA, and the
National Science Foundation.
All CWU time series
& all PBO data can be downloaded.

The data grouped into clusters around
Cascadia volcanoes are rotated into cylindrical coordinates centered on
the specified volcanic edifice. Motions are labeled "Away" (radially from
the volcanic center, with outward motions positive) and "Tangential"
(with counter-clockwise motions positive).